The Official NAD C658 Thread - Page 3 - AVS Forum | Home Theater Discussions And Reviews
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post #61 of 652 Old 01-21-2019, 11:03 AM
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righto lads... carry on ¡!¡!
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post #62 of 652 Old 01-21-2019, 11:14 AM
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I did find this in a spec sheet, “NAD’s Direct Digital 35 bit 844kHz DAC, one of the best performing DACs on the market today with its 130dB dynamic range and incredibly low jitter spec“. Based on the spec, some think it may be the same DAC that’s in the M51.


https://www.hifihuone.fi/wp-content/...-DATALEHTI.pdf

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post #63 of 652 Old 01-21-2019, 12:06 PM
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Strange that NAD doesn't plainly state what the chip is, eh chaps?
Lest they fear Upon risk of being pillared upon the stake of inferior DAC chip specs, I declare NAD null and nadded. Take that!
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post #64 of 652 Old 01-21-2019, 12:30 PM
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I wish there was an index where we could look up a DAC chip and see what components use said chip and vice versa.

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post #65 of 652 Old 01-21-2019, 01:02 PM
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@CDLehner , is it possible to check in the menus if you can select a variable high-pass filter for the analog outs please?
I've emailed NAD about it but no answer

Thanks!
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post #66 of 652 Old 01-21-2019, 06:48 PM - Thread Starter
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Originally Posted by incult View Post
@CDLehner , is it possible to check in the menus if you can select a variable high-pass filter for the analog outs please?
I've emailed NAD about it but no answer

Thanks!
I don't see, any options...for analog out; but you're welcome to have a look through the manual.

https://nadelectronics.com/wp-conten...g_OM_v03-1.pdf

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post #67 of 652 Old 01-22-2019, 01:34 AM
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I've looked over the manual and there's no mention of it. I would use it in 2.2 system so I need stereo subwoofer + crossovers + room correction.
If it has the ability to set low-pass / high-pass crossover points than it fits the bill.

Does your unit have one or two subwoofer analog outs?
On the NAD webpage there are two, but on crutchfield the picture show only one output...
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post #68 of 652 Old 01-22-2019, 08:10 AM
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Quote:
Originally Posted by incult View Post
I've looked over the manual and there's no mention of it. I would use it in 2.2 system so I need stereo subwoofer + crossovers + room correction.
If it has the ability to set low-pass / high-pass crossover points than it fits the bill.

Does your unit have one or two subwoofer analog outs?
On the NAD webpage there are two, but on crutchfield the picture show only one output...
From reading the manual, it appears the crossover is fixed at 80hz and the sub output is mono not stereo. Looks like it has 2 sub outputs but both are fed the same signal.
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post #69 of 652 Old 01-22-2019, 08:45 AM
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The new Elac Alchemy DDP2 that comes at at the end of the month is another "all in one" minus the dirac. The Elac unit has better DAC specs but is $1000 more. Tough decision to make since i just sold my DAC/Pre and need something very soon. I already have the Minidsp Dirac unit and i love that thing.
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post #70 of 652 Old 01-22-2019, 10:58 AM
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Quote:
Originally Posted by phastm3 View Post
The new Elac Alchemy DDP2 that comes at at the end of the month is another "all in one" minus the dirac. The Elac unit has better DAC specs but is $1000 more. Tough decision to make since i just sold my DAC/Pre and need something very soon. I already have the Minidsp Dirac unit and i love that thing.
Can't you use the Minidsp as a DAC?
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post #71 of 652 Old 01-22-2019, 11:24 AM
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Can't you use the Minidsp as a DAC?
It only has an 1 optical input and i would need usb and coax. I also need volume/preamp.
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post #72 of 652 Old 01-22-2019, 12:26 PM
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I have the NAD C658 in house for a few days as a possible replacement for my M51 which serves as DAC for NAD M50.2

this is a very nice unit and sounds very good: have not tried Dirac yet

so far I noticed 2 glitches:
-renaming inputs will not stick: it reverts to default input name overnight
-Bluetooth headphone will not automatically reconnect after it is shutoff: NAD support says this is a known issue which will be fixed

more to come

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post #73 of 652 Old 01-22-2019, 01:38 PM
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Thanks @markrubin Heard it may be using the same chip as the 51, do you hear any sonic differences?

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post #74 of 652 Old 01-22-2019, 02:48 PM
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Originally Posted by mbroadus View Post
Thanks @markrubin Heard it may be using the same chip as the 51, do you hear any sonic differences?

can't comment on that yet but...

being the C658 is also a preamp, I hooked it up to my front speakers feeding the NAD M27 amp, and subs: it sounded excellent as a 2.1 preamp: I have always liked/preferred the sound quality of most NAD devices (yes it rivals the Krell Foundation)
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post #75 of 652 Old 01-22-2019, 03:33 PM
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Does the C658 have a crossover? Manual doesnt list one. Just a 80Hz low pass on the sub outputs.

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post #76 of 652 Old 01-22-2019, 03:44 PM
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Does the C658 have a crossover? Manual doesnt list one. Just a 80Hz low pass on the sub outputs.

that is my understanding: and I don't think Dirac Live adds crossovers but not sure

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post #77 of 652 Old 01-22-2019, 03:47 PM
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that is my understanding: and I don't think Dirac Live adds crossovers but not sure
That seems like a major oversight. The C368 had one but it was at 150Hz so basically useless. I was hoping NAD learned from that...

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post #78 of 652 Old 01-23-2019, 07:55 PM - Thread Starter
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Quote:
Originally Posted by incult View Post
I've looked over the manual and there's no mention of it. I would use it in 2.2 system so I need stereo subwoofer + crossovers + room correction.
If it has the ability to set low-pass / high-pass crossover points than it fits the bill.

Does your unit have one or two subwoofer analog outs?
On the NAD webpage there are two, but on crutchfield the picture show only one output...
Quote:
Originally Posted by tbaucom View Post
From reading the manual, it appears the crossover is fixed at 80hz and the sub output is mono not stereo. Looks like it has 2 sub outputs but both are fed the same signal.
2; and the spec-sheet says stereo. https://nadelectronics.com/wp-conten...Data_Sheet.pdf



I've perused the manual. I don't see where it says it's mono?

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post #79 of 652 Old 01-23-2019, 08:00 PM - Thread Starter
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Quote:
Originally Posted by phastm3 View Post
The new Elac Alchemy DDP2 that comes at at the end of the month is another "all in one" minus the dirac. The Elac unit has better DAC specs but is $1000 more. Tough decision to make since i just sold my DAC/Pre and need something very soon. I already have the Minidsp Dirac unit and i love that thing.
I saw the ELAC, in the AA catalog that came today.

$1k more, and no Dirac. I'm happy with my choice.

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post #80 of 652 Old 01-26-2019, 10:38 AM
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Hey Guys,

New member here. I bought a C658 the day it came into the dealer. I don't know anything about the difference in chipset quality, so hopefully they did OK with this unit. I AB'd this against an NAD M12 at the dealer - I have to say the M12 was a better sounding unit, but the longer I've been doing this, I've gotten more realistic about how this system is going to be used and thought the C658 would do just fine. I used to spend a lot (for me) trying to shore up the weak links in my system - with every big purchase, I was immediately looking for the next project. At the height of it, I had Genesis V speakers, Pass Lab X1 preamp and X250 amp, etc., and was still unsatisfied. I then went the AV route so the family could enjoy it, sold the Gens and Pass Lab stuff, and have been without a good 2-channel preamp for a long time, and really have not spent much time listening to music on anything other than headphones. Anyway, this is a very long-winded way of saying that while there may be better sounding units out there, you're going to pay substantially more for them. This thing does what I need it to do. It sounds very good pulling music from my NAS unit or CD player and absolutely wonderful streaming high-def stuff straight from the interwebs.

I am a newbie to this whole streaming/wireless/BT thing in my audio, so perhaps this is common; the NAD is very cranky about how you set it up. The initial update had to be done via ethernet, and surprisingly (to me) the wireless setup had to be done that way, too. Also, it did not like when I tried to rename the "room" in the BluOS app, and would not recognize the network until I changed it back to "living room". We recently swapped over to a mesh-wifi system, and that was a PITA to reestablish my setup - again, the NAD had to be pulled out of the rack and hooked directly to an ethernet cable to get it to work. Outside of that, I am very happy with it. It's great being able to control everything from my phone. The NAD is in constant standby mode, and wakes the amp via a 12v trigger, so no switches to throw. I've been a little frustrated with the inability to get the Dirac program to run, but after stumbling into this forum, I now know it isn't available yet - looking forward to experimenting with that.

Overall, this is a much cleaner setup with very high WAF.

Jim
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post #81 of 652 Old 01-26-2019, 11:43 AM
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I have had mine for a couple of weeks
there is another thread in another forum:

https://www.avsforum.com/forum/173-2...l#post57411602

these threads may be merged soon
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post #82 of 652 Old 01-28-2019, 08:00 AM
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Lads, I am not feeling the love for this unit based on thread replies. Nor HiFi reviews... None. How does it sound? Toe curlin', eyeballs pinned back great, or as good as a sawbuck$$ DAC
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post #83 of 652 Old 01-28-2019, 09:21 AM
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Originally Posted by markrubin View Post
I have had mine for a couple of weeks
there is another thread in another forum:

https://www.avsforum.com/forum/173-2...l#post57411602

these threads may be merged soon

threads merged: a redirect has been left from the merged thread in DAC forum

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Originally Posted by markrubin View Post
I have the NAD C658 in house for a few days as a possible replacement for my M51 which serves as DAC for NAD M50.2

this is a very nice unit and sounds very good: have not tried Dirac yet

so far I noticed 2 glitches:
-renaming inputs will not stick: it reverts to default input name overnight
-Bluetooth headphone will not automatically reconnect after it is shutoff: NAD support says this is a known issue which will be fixed

more to come
Erich S (BlueOS customer support) has confirmed the renaming of source inputs issue has been replicated and a fix is in the works


NAD customer support is some of the best I have seen

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post #85 of 652 Old 01-28-2019, 09:35 AM
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Originally Posted by wassup View Post
Lads, I am not feeling the love for this unit based on thread replies. Nor HiFi reviews... None. How does it sound? Toe curlin', eyeballs pinned back great, or as good as a sawbuck$$ DAC
The product is brand new - I don't know how many reviewers have actually gotten their hands on it yet, so the lack of reviews is not an indication of NAD missing its mark. I am very pleased with my purchase - you get a lot of functionality for your $1500 and it sounds very good. Having said that, my last 2-channel pre was a Pass Labs X1, which was amazing. However, all it had to do was switch sources and control volume. I am working off of a memory 7 years ago in an entirely different room. Via CD, it arguably sounded better, but it couldn't stream hi-def, which for me has been a revelation. It also cost over 3x as much, 15 years ago. Honestly, the only way I would probably even notice is if they were played back-to-back. I did slightly prefer the sound of the M12 at the dealer, but it also was fully burned-in, vs. the C658 that had come directly out of the box.

I think NAD has a great product with this C 658. It hit everything I was looking for - the ability to stream via the internet or NAS (some machines do not play well with NAS), internal high-quality DAC, a very good preamp, etc., balanced output and a good choice of analogue and digital inputs. The Dirac is a nice feature, but for me is a bonus, not a clincher. I don't expect toe-curlin', eyeballs pinned back great for $1500, even for a stand-alone preamp, but am very pleased with the sound.


J
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post #86 of 652 Old 01-28-2019, 09:55 AM
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Lads, I am not feeling the love for this unit based on thread replies. Nor HiFi reviews... None. How does it sound? Toe curlin', eyeballs pinned back great, or as good as a sawbuck$$ DAC
to me, the C658 sounds as good as the NAD Master series M51 which it replaced
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post #87 of 652 Old 01-28-2019, 10:16 AM
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Helpful context to your expectations. My expectations are similar to yours so looking for your opinion, or anyone else who cares to share there thoughts.

I had a NAD M12 that I tried with Odyssey Kismet Amplifier powering a pair of Paradigms 60v5. It was not a good match, at least in my setup. The sound stage shrank from my previous bare-bones Denon 4310CI serving as a Pre-amp, the highs were shrill, and the bass was so boomy that it totally muddied the mid-range. It was awful.

My question is that since you've had M12, and C658, do you think it's essentially the same product in a different packaging or do you feel there's something different here?

I don't have access to auditioning the c658 and will be ordering online. I'd rather skip the hassle and get something else, if this is essentially M12 or even punches just below M12 performance.

thanks



Quote:
Originally Posted by jameswilt View Post
Hey Guys,

New member here. I bought a C658 the day it came into the dealer. I don't know anything about the difference in chipset quality, so hopefully they did OK with this unit. I AB'd this against an NAD M12 at the dealer - I have to say the M12 was a better sounding unit, but the longer I've been doing this, I've gotten more realistic about how this system is going to be used and thought the C658 would do just fine. I used to spend a lot (for me) trying to shore up the weak links in my system - with every big purchase, I was immediately looking for the next project. At the height of it, I had Genesis V speakers, Pass Lab X1 preamp and X250 amp, etc., and was still unsatisfied. I then went the AV route so the family could enjoy it, sold the Gens and Pass Lab stuff, and have been without a good 2-channel preamp for a long time, and really have not spent much time listening to music on anything other than headphones. Anyway, this is a very long-winded way of saying that while there may be better sounding units out there, you're going to pay substantially more for them. This thing does what I need it to do. It sounds very good pulling music from my NAS unit or CD player and absolutely wonderful streaming high-def stuff straight from the interwebs.

I am a newbie to this whole streaming/wireless/BT thing in my audio, so perhaps this is common; the NAD is very cranky about how you set it up. The initial update had to be done via ethernet, and surprisingly (to me) the wireless setup had to be done that way, too. Also, it did not like when I tried to rename the "room" in the BluOS app, and would not recognize the network until I changed it back to "living room". We recently swapped over to a mesh-wifi system, and that was a PITA to reestablish my setup - again, the NAD had to be pulled out of the rack and hooked directly to an ethernet cable to get it to work. Outside of that, I am very happy with it. It's great being able to control everything from my phone. The NAD is in constant standby mode, and wakes the amp via a 12v trigger, so no switches to throw. I've been a little frustrated with the inability to get the Dirac program to run, but after stumbling into this forum, I now know it isn't available yet - looking forward to experimenting with that.

Overall, this is a much cleaner setup with very high WAF.

Jim
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post #88 of 652 Old 01-28-2019, 10:42 AM
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Originally Posted by audiocat5 View Post
Helpful context to your expectations. My expectations are similar to yours so looking for your opinion, or anyone else who cares to share there thoughts.

I had a NAD M12 that I tried with Odyssey Kismet Amplifier powering a pair of Paradigms 60v5. It was not a good match, at least in my setup. The sound stage shrank from my previous bare-bones Denon 4310CI serving as a Pre-amp, the highs were shrill, and the bass was so boomy that it totally muddied the mid-range. It was awful.

My question is that since you've had M12, and C658, do you think it's essentially the same product in a different packaging or do you feel there's something different here?

I don't have access to auditioning the c658 and will be ordering online. I'd rather skip the hassle and get something else, if this is essentially M12 or even punches just below M12 performance.

thanks
I did not hear the M12 in my system, so I cannot comment. The M12 fed an M22 amp and a pair of DeVor speakers, which sounded really great - I was not aware of this brand, but their imaging/soundstage was superb.
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post #89 of 652 Old 01-28-2019, 11:11 AM
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Helpful context to your expectations. My expectations are similar to yours so looking for your opinion, or anyone else who cares to share there thoughts.

I had a NAD M12 that I tried with Odyssey Kismet Amplifier powering a pair of Paradigms 60v5. It was not a good match, at least in my setup. The sound stage shrank from my previous bare-bones Denon 4310CI serving as a Pre-amp, the highs were shrill, and the bass was so boomy that it totally muddied the mid-range. It was awful.

My question is that since you've had M12, and C658, do you think it's essentially the same product in a different packaging or do you feel there's something different here?

I don't have access to auditioning the c658 and will be ordering online. I'd rather skip the hassle and get something else, if this is essentially M12 or even punches just below M12 performance.

thanks
Was that the M12 sound or just the lack of room eq?
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post #90 of 652 Old 01-28-2019, 07:25 PM - Thread Starter
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Quote:
Originally Posted by jameswilt View Post
I think NAD has a great product with this C 658. It hit everything I was looking for - the ability to stream via the internet or NAS (some machines do not play well with NAS), internal high-quality DAC, a very good preamp, etc., balanced output and a good choice of analogue and digital inputs. The Dirac is a nice feature, but for me is a bonus, not a clincher. I don't expect toe-curlin', eyeballs pinned back great for $1500, even for a stand-alone preamp, but am very pleased with the sound.


J
That was the case, for me as well.

I'm down-sizing...and was actually looking, for a single box; to drive active (Dynaudio) speakers.

I needed:

- Balanced pre-out
- ROON
- DSD
- MQA

You'd be surprised...how many units, checked 3 of 4; but few hit all the boxes (plus the Dirac, as a bonus).

As James said: I'm coming from, a ~$25k system...down to maybe ~$10k; to now, a $1500 front-end...and I don't recall, exactly what I paid for the speakers. But I got a smoking deal, on NOStock...and I'm well under $2500, all in.

So...does it sound as good, as when I had 5-figures in the kit? Nah; but don't need it to. I want to hear the music...not listen to the gear.

All The Music In The World > Auralic Aries Mini > Musical Fidelity M2si > Dynaudio EMIT M10s
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